﻿<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>半透明效果</title>
    <!-- <script src="https://cdn.staticfile.org/jquery/3.5.1/jquery.min.js"></script> -->
    <script src="../../js/three.js"></script>
    <script src="../../js/controls/OrbitControls.js"></script>
    <style type="text/css">
        body {
            margin: 0;
            overflow: hidden;
        }
    </style>
</head>

<body>
    <script>
        /**
         * 创建场景对象Scene
         */
        var scene = new THREE.Scene();
        /**
         * 创建网格模型
         */
        //长方体 参数：长，宽，高
        var geometry1 = new THREE.BoxGeometry(100, 100, 100);
        var material1 = new THREE.MeshLambertMaterial({
            color: 0x0000ff, //材质颜色
            transparent: true, //开启透明度
            opacity: 0.5, //设置透明度具体值
        }) //材质对象Material
        var mesh1 = new THREE.Mesh(geometry1, material1) // 网格模型对象Mesh
        scene.add(mesh1) // 网格模型添加到场景

        //球体网格模型
        var geometry2 = new THREE.SphereGeometry(60, 40, 40);
        var material2 = new THREE.MeshLambertMaterial({
            color: 0xff00ff
        }) //材质对象Material
        var mesh2 = new THREE.Mesh(geometry2, material2) // 网格模型对象Mesh
        mesh2.translateY(120) //球体网格模型沿Y轴正方向平移120
        scene.add(mesh2) // 网格模型添加到场景

        //球体网格模型
        var geometry3 = new THREE.CylinderGeometry(50, 50, 100, 25);
        var material3 = new THREE.MeshLambertMaterial({
            color: 0xffff00
        }) //材质对象Material
        var mesh3 = new THREE.Mesh(geometry3, material3) // 网格模型对象Mesh
        mesh3.position.set(120, 0, 0); //设置mesh3模型对象的xyz坐标为120,0,0
        scene.add(mesh3) // 网格模型添加到场景

        //辅助坐标系
        var axisHelper = new THREE.AxisHelper(250)
        scene.add(axisHelper)

        /**
         * 光源设置
         */
        //点光源
        var point = new THREE.PointLight(0xffffff);
        point.position.set(400, 200, 300); //点光源位置
        scene.add(point); //点光源添加到场景中
        //环境光
        var ambient = new THREE.AmbientLight(0x444444);
        scene.add(ambient);
        /**
         * 相机设置
         */
        var width = window.innerWidth; //窗口宽度
        var height = window.innerHeight; //窗口高度
        var k = width / height; //窗口宽高比
        var s = 150; //三维场景显示范围控制系数，系数越大，显示的范围越大
        //创建相机对象
        var camera = new THREE.OrthographicCamera(-s * k, s * k, s, -s, 1, 1000);
        camera.position.set(200, 300, 200); //设置相机位置
        camera.lookAt(scene.position); //设置相机方向(指向的场景对象)

        /**
         * 创建渲染器对象
         */
        var renderer = new THREE.WebGLRenderer();
        renderer.setSize(width, height); //设置渲染区域尺寸
        renderer.setClearColor(0x666666, 1); //设置背景颜色
        document.body.appendChild(renderer.domElement); //body元素中插入canvas对象

        function render() {
            renderer.render(scene, camera) // 执行渲染
            requestAnimationFrame(render) //请求再次执行渲染函数render，渲染下一帧
        }
        render()
        //创建控件对象  相机对象camera作为参数   控件可以监听鼠标的变化，改变相机对象的属性
        var controls = new THREE.OrbitControls(camera, renderer.domElement)
    </script>
</body>

</html>